On Tue, Feb 11, 2003 at 08:52:17AM +0100, Christian Skovdal Andersen wrote: > Jeg har taget bundfaldet i g?rtanken fra mit sidste bryg, og sat det i > k?leskabet i et t?tsluttet glas, da jeg havde en formodning om at 3/4 liter > g?rbundfald ville kunne v?re med til at kickstarte mit n?ste bryg.
Good idea. I usually keep it in a bottle with an airlock, so it can get rid of any CO2 it might want to make. > Jeg er dog i tvivl om det er m?den at holde liv i g?ren, eller om jeg b?r > tils?tte den n?ring j?vnligt (med fare for infektion hver gang). It should be good for a week (or two). If you want to keep it longer, you may need to feed it a bit. I seem to recall that you loose about 25% of the live cells in a week, so if you have enough stuff, you can keep it for a few weeks. Just wake it up with some food and warmth before you start using it. If you do not happen to have sterile wort laying around, apple juice is a good substitute for food, it has some sugars and other good stuff, and it comes in pasteurized packages. Just check there is no chemicals, and be careful to sanitize the outside of the packet. Often I ferment a small experimental batch in a 5 liter bottle. If I reuse that yeast, I just move the bottle into my fridge without further ado. Such slurry has been the most effective starters I have ever used. > Jeg ved heller ikke om det gr? slam p? bunden af g?rtanken er aktive > g?rceller, eller blot affaldsstoffer og d?de celler, som der jo ikke > ligefrem er brug for at tils?tte. They aren't dead cells, for the most parts. Just sleeping (flocculating). That is the way yeast behaves when it starts to run out of food, it collects into clumps that settle to the bottom. "It's not dead, it is resting. It is pining for the fjords. It is Norweigian fjord-yeast" ;-) "Designing Great Beers" discusses the process with cell-counts and more details than you ever want to know. I am sure others will jump in to correct any mistakes I may have made, and to share their experiences. -- Heikki Levanto LSD - Levanto Software Development <[EMAIL PROTECTED]>
